Battery cake



ATTORNEYS Y VV. S. DOE

BATTERY CAKE Apri? 29, 1924.

Filed March WIT/VESSES M/2 Apr. @9, M224.

WALTER. SvCDTT DE,` F KENT, OHIO.

Barrena dans.

Application tiled March B0, 1922. Serial No. 547,971.

To LZ1 fio/omet may concern.'

Be it known that I, lVAL'rnn Sootr'r Don, a citizen of the United States, and a resident oi' Kent, in the county of Portage and State 6 ot Ohio, have invented a new and Improved Battery Cake, oil which the followingis a full. clear, and exact description.

rl`hc invention relates to a battery cake, and has for an object the provision of a sim- 10 ple, compressed, dry cake which can be sold and used to renew dry batteries or any other,

e battery unit in a very simple and eiiicient manner Another object resides in the provision of i5 a cake which, except for being moistened, is

complete and ready to generate a current when placed between a positive and a negative element. i

A further object resides in the provision ot a cake which is simple andconvenient for use in the renewal of batteries in such de.- viccs as electric lamps, iiashlights,acoustic instruments, radio batteries, etc.

A still further object resides in the profact that it is dry and will not generate un-, til moistened and placed between positive and negative elements, can be stored away in large quantities in stock withoutdeterioration, ii kept dry.

Another object is to minimize expense and add great convenience in marketing such a cake, which is used in the formation of a flat cell, such as a cell, for instance, as that ent. Serial No. 466,035, filed May 2, 1921. and entitled Renewable battery.

A further object resides in the particular 40 construction and arrangement of parts and shown in the accompanying drawings.

The/invention is illustrated in the drawings. of which- A l `igure l isa perspective view of the cake. AFigure 2 shows the cake in position bei tween the electro-elements to forma cell.

The form oi' the invention shown in the drawings is a. preferred formfalthoughitis understood that modifications in the construction and arrangement of the partsand 2a visionfof a battery cakewhich because of the within the cup or recess the cake l.

described in my application for Letters Pat-` primary dry cell which are hereinafter described-and claimed.

in the character of the materials used may be adopted without departing from 'the spirit of the invention. v

As illustrated in the drawings, the inven- 5s tion comprises a cake l shown as a rectangular blocl or cake, although the form of the cake is immaterial. This cake is made of any suitable material capable when moistened to cause the production of current ea when placed between a positive and negative element. The particular ingredients of which the cake is formed is immaterial, as the Jformula therefor may be changed to increase or decrease the internal resistance of the cell to suit it for various uses as desired.

In Fig. 2 is shown an illustrative form of cells involving the use of my compressed cake. This comp-rises an electrode 2, which may be an electro-positive element or a zinc plate acting as a covert for a second elect-rode 3, which may be an electro-negative element or carbon or graphite plate cup-shaped in form and having a circumferential iiange 4; making the electrode 3 cupvshape to receive The cakeytheretore.' is held tightly enclosed within and between the two electrodes 'Qand 3 and the combination of these three elements forms a cell.

This unit, by being constructed to' receive vthe compressed cake, is capable of simple assembly and disassembly whereby the cakes may be very readily renewed at any time. In order to place this cake in condition for operative use, it is merely ,necessary to moistenitloefore placing it in the cell.

What l claim is: l

A dry battery cell which comprises a cupshaped electrode, a dry compressed cake disposed in the cup or recess of said electrode, said cake containing all the necessary. ingredients to produce an electric current when moistened, the outer surface of said cake being Hush with the edge of the cup- @5 shaped electrode, and a. second electrode comprising a cover plate to be disposed against the flat surface formed by the edge vot the cap/'and thecake. to forma cover for the cup and the cake to enclose the cake t0@ within the cup.

WALTER SCOTT DOE. 

